Question

2x+y=7, what is the value of y if x=3?

Answer 1

Hi student, let me help you out!

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Let's substitute the value of x for x: $\mathrm{2(3)+y=7}$.

Upon simplifying, we get: $\mathrm{6+y=7}$.

Now we solve for y by subtracting 6 from both sides: $\mathrm{1=y}$

Thus, the solution is $\bigstar~\underline{\boxed{\mathrm{y=1}}}$

Hope it helped you out, ask in comments if any queries arise.